Add SemVer2, an implementation of Version that supports Semantic Versioning
This is currently only used in MSVersion, and is not intended to
necessarily be a replacement for SimpleVersion, as it is more strict,
and only useful when a platform can dictate the version number format.
This will come in useful later, however.
(f2fe6cd7 by ladycailin)
Add support for method line numbers (ish) in ClassDiscovery
The line number the method declaration is on isn't actually available in
class files, so it's not possible to get that directly, but we can get
a relatively close proxy, the line number of the first executable
statement. This is good enough for most purposes, which is to direct
users attention to roughly where the code is defined. This will
hopefully be good enough for most purposes, because it's the best we can
do without actually parsing java source code.
(9fe1287f by ladycailin)
